Appalling service

I bought a couch from these guys and 2 months down the line, it started giving problems, I contacted them and they sent the supplier to come check it, the supplier confirmed that there was something wrong and they will come fetch it (the cushions are not filled properly, and the corner couch is making a cracking sound when you sit on it), after that, these guys have gone quiet. I have sent numerous emails with no help whatsoever.